Scientists think some trees may share food and signals through their roots and tiny fungi underground.

Snowflakes almost always have six sides or six points.

Antarctica is the largest desert in the world — deserts are places with very little rain or snow.

Birds are living relatives of dinosaurs.

Ketchup was once sold as a medicine.

Peanuts aren't nuts — they are legumes, like beans.

Owls can turn their heads about three-quarters of the way around.